| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| refractive index image phase | 1.27 | 0.9 | 7027 | 49 | 28 |
| refractive | 1.69 | 0.6 | 5666 | 33 | 10 |
| index | 1.36 | 0.4 | 3983 | 72 | 5 |
| image | 1.83 | 0.4 | 9693 | 25 | 5 |
| phase | 1.51 | 0.7 | 8694 | 23 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| refractive index image phase | 0.47 | 0.6 | 529 | 99 |
